Added command to update project commit hash (#575)

app/Build/Commands/UpdateMetadataCommands.cs

@@ -337,7 +337,8 @@ public sealed partial class UpdateMetadataCommands
         Console.WriteLine(" done.");
     }
     
-    private async Task UpdateProjectCommitHash()
+    [Command("update-project-hash", Description = "Update the project commit hash")]
+    public async Task UpdateProjectCommitHash()
     {
         const int COMMIT_HASH_INDEX = 8;